US1006467A - Split pulley. - Google Patents

Description

G. S. DAVIS.

SPLIT PULLEY.

APPLIOATION FILED we. 17, 1910.

1,006,467. Patented Oct. 24, 1911.

2 SHEETS-SHEET 1.

:OLUMBIA PLANDORAPH COHWASHINOTON D. C.

WITNESSES 0. S. DAVIS.

SPLIT PULLEY.

APPLICATION FILED AUG. 17, 1910.

Patented Oct. 24, 1911.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH c0., WASHINGTON. n. c.-

INVENTOR r/eaj b:

CHARLES S. DAVIS, OF PHILADELPHIA, PENNSYLVANIA.

SPLIT PULLEY.

Specification of Letters Patent.

Patented Oct. 24, 1911.

Application filed August 17, 1910. Serial No. 577,612.

To all whom it may concern:

Be it known that I, CHARLES S. DAVIS, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Split Pulleys, of which the following is a specification. I

My invention relates to split metal pulleys, and particularly to new and useful improvements in the pulley as disclosed in Patent Number 940,720. 1

An important object of this invention is to improve the structure of a pulley of the above character, whereby the same is rendered stronger and may be more cheaply manufactured.

Other objects and advantages of this invention will appear in the course of the following description.

In the accompanying drawings forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same, Figure 1 is an end elevation of a complete pulley,-Fig. 2 is a central vertical longitudinal section through the same, Fig. 3 is a perspective view of gusset plates employed upon the pulley, Fig. 1 is a central transverse sectional view, Fig. 5 is a fragmentary detail view of a portion of the pulley shown in Figs. 1 to 1, inclusive, Fig. 6 is a detail view taken on line 66 of Fig. 5.

In the drawings, wherein is illustrated a preferred embodiment of my invention, the numerals l and 2 designate halves of the pulley. These halves are alike and a description of one of them will answer for both. Each of the halves 1 and 2 comprises a segmental sheet-metal rim 3, provided upon its inner surface with stiffening ribs 4. These stiffening ribs are L-shaped in vertical cross-section and spaced as shown. Each of the stiffening ribs comprises portions 5 and 6, which for the sake of clearness may be termed horizontal and vertical 5 extend outwardly for engagement with the edges of the rim 3, said edges of the rim being bent about said horizontal flanges and rigidly secured to the same, by means of welding or the like. Each of the halves l and 2 further comprises arms 7, which may preferably be L-shaped in cross-section. The ends of the arms 7 are rigidly secured to the vertical flanges 6, by means of diametrically arranged pairs of gusset plates 8,

' see Fig. 3. One of the gusset plates 8 is ;rigidly secured to the vertical flanges 6 of the half 1, and the other plate 8 is rigidly secured to the corresponding flanges of the stiffening ribs of the half 2. The plates 8 are provided with cooperating tongues and 1 grooves 9 and 10, respectively, as clearly shown in Fig. 8. The ends of the arms 7 of the pulley halves l and 2 are secured together by means of bolts 11, as shown. The pulley halves 1 and 2 are thus secured together by the bolts 11, and the pairs of gusset plates 8 serve to prevent a movement of either pulley half with relation to the other in a direction parallel to the axis of the pulley. The stiffening ribs 4 have bolted or riveted to their vertical flanges, arms 12, as shown. These arms serve to strengthen the pulley halves. The junction of the segmental rim sections 8 of the pulley halves and the stiflening ribs of the same, take place in the same plane, and for this reason the adjacent ends of the horizontal flanges of the stiflening ribs 4, are provided with cooperating tongues and grooves 13 and 1 1, respectively. By this construction the junction of the rim sections 3 is spanned by the tongues 13, whereby the strength of the pulley is increased and the stiflening ribs are given inter-locking engagement with each other to prevent lateral movement. The arms 7 extend in opposite directions to each other near the center of the pulley, for receiving therebetween a hub 15. This hub comprises in nor spacers 16 which carry semicylindrical members 17. The semi-cylindrical members 17 are riveted to their respective arms 7, as shown at 18, the rivets 18 also serving to secure the inner spacers 16 to the arms 7 and to secure outer spacers 19 to said arms. The arms 7 and spacers 16 and 19 are provided with suitable openings for receiving clamping bolts 20, which connectarms 7 of the pulley halves 1 and 2, as shown. The function of the clamping bolts 20 is to rigidly lock the pulley upon a suitable shaft (not shown).

From the above description it is obvious that I have provided a pulley formed of two separable halves, which may be separated to apply the pulley to its shaft and then securely connected together upon said shaft.

I wish it understood that the form of my invention herewith shown and described is Having thus fully described my invention what I claim as new and desire to secure by Letters Patent, is

In a pulley of the character described, detachable pulley halves, comprising segmental rims, spaced stiffening ribs secured vto each of the segmental rims, each segmental rim having its outer edges bent upon itselfto clamp said stiffening ribs, the adjacent ends of the stiffening ribs of the pulley halves being provided with 0051;)-

.erating tongues and grooves so that said tongues span the junction of the segmental rims, pairs of U-shaped gusset plates disposed adjacent the junction of the segmental rims, said U-shaped gusset plates having the sides thereof provided with cooperating tongues and grooves so that the last named tongues span the junction of the rims at right angles to the first named tongues, and means to rigidly connect said gusset plates and stiffening ribs.-

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

CHARLES S. DAVIS. Witnesses:

GEORGE S. CARTER, SELDEN S. CARTER.

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

' Washington, I). C.

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