US1245492A - Hand-chain guide for hoists. - Google Patents

Description

E. Y. MOORE HAND C A N GUIDE F0 ISTS.

APPL N FILED APR. 911.

1,245,492. PatentedNov. l7.

2 SHEETS-SH E. Y. MOORE.

HAND CHAIN GUIDE FOR HOISTS.

APPLICATION FILED APR. 30I 917.

1,245,492. Patented Nov; 6, 1917.

2 SHEETS-SHEET 2- FIB- 6.

UNITED STATES PATENT OFFICE.

EDWARD Y. MOORE, F CLEVELAND, OHIO.

HAND-CHAIN GUIDE FOR I-IOISTS.

Specification of Letters Patent.

' App1icatio1ifi1edApri13O, 1917. Serial No. 165,355.

and useful Improvement in Hand-Chain Guides for Hoists, of which the following is a full, clear, and exact 'descriptlon, reference being had to the accompanying drawings.

This invention relates to a guard and guide for the hand chain of a hoist, adapted to prevent the hand chain fouling or inadvertently leaving the wheel, while allowing freedom of movement of the chain as desired. The object of the invention is to provide a device of this character which shall be simple and cheap in construction and effective in guiding the chain, insuring its retention on the wheel and preventing the depending reaches thereof fouling or becoming jammed, and at the same time allowing the hand chain to be manipulated from various positions as required in use. The invention is clearly illustrated in the drawings and is herein more fully described, and the essential characteristics are summarized in the claims. a 1

, In the drawings, Figure I'is perspective view of an illustrative hoisthaving my hand chain guide applied thereto; Fig. 2 is a rear elevation of the guide removed; Fig. 3 is a bottom plan of the guide;'Fig. 4: is a vertical section of the guide in a plane par allel with Fig. 2; Fig. 5 is a top plan of the guide; Fig. 6 is a vertical transverse section through the guide, illustrating its attachment to the frame of the hoist and its position with reference to the hand wheel.

In Fig. 1, 1 indicates the hoist frame suspended by a hook 2. 3 designates the hand chain wheel, and 4: the hand chain, and 5 the guard constituting this invention. Suitable raising mechanism carried by the frame is operated by the hand wheel according to the type of hoist used. 6 indicates the load chain carrying a hook 7.

My hand chain guide, designated generally 5, is secured in place concentrically of the hand wheel and provides a band-like portion lying beneath the hand wheel and having two openings 10 for the passage of the hand chain. Between the openings the band is solid or closed, as shown at 12. At the openings the band has narrow portions 13 and 14 in front and at the rear of the openings, and above the -openings these parts are brought'together in a'downwardly and outwardly inclined curved top or semitubular portions 15. j w

-The guard is provided on the rear 'with means for securing it .to the frameof' the hoist and holding its body concentric of the hand wheel. To effect this in a simpleand efficient manner I provide two inclined arms 16 leading radially inward from the portion 14 of the body and terminating in an annular'ring-like portion 17 which is adapted to be secured to the hoist frame.

8 forming part of the bearing for the main shaft 9. The openlng 18 of the ring 17 Sun rounds this boss. The ring has holes As illustrated' in Fig. 6, the hoist frame 1 has a'boss l atented Nov. 6, 1917.

through which suitable bolts (for'example cap screws) may pass into the frame. Two

of these holes are shown at 19 on either side of the opening 18, and a third hole 20 is shown in a downwardly extending tongue portion 21 of the ring. Suitable recesses indicated at'22 and 23 in Fig. 2-, maybe made in the rear face of the ring to. receive ribs which may be on the face of the hoist frame.

My chain guide may conveniently be one single integral casting. It is cheaply constructed and is easily'mounted in place, and may be rigidly held by cap screws.

By providing two disconnected open spaces 10, through which the reaches of the hand chain pass, the chain is positively prevented from wrapping around the under' side of the wheel fromanycause. The intermediate portion alsoserves to brace the "edge portions of the guard. The rounded inclined outwardly extending tops or semitubular portions 15 of the guard, allow the chain to be pulled from positions considerably at the side of the hoist. At the same time this portion of the guard prevents the chain leaving the upper portion of the wheel, or jumping, as it is frequently called.

Having thus described my invention, what I claim is:

1. A hand chain guide for hoists, consisting of a plate-like band adapted to eX- tend around the under part of a hand wheel, and supporting means connected with said portion and adapted to extend around the shaft and be rigidly secured to the hoist frame.

2. A hand chain guide for hoists comprising a band-like portion adapted to extend around the under part of the wheel and having space for the passage of the hand chain terminating in outwardly inclined semi-tubular portions, and a supporting device connected with the band-like portion and adapted to extend around the shaft of the wheel.

3. A hand chain guide for hoists consisting of a band-like portion adapted to extend around the under part of the wheel, said portion having openings for the passage of the hand chain, each opening being closed at its upper end by a rounded outwardly extendingportion, and supporting armsj oining the rear of the open parts of the band-like portion and having a ring adapted to surround the shaft and be secured to'the' hoist frame. l. A hand chain guide for hoists made in one single integral piece and comprising a band-like portion with two disconnected openings for the passage of the hand chain, semi-tubular top portions above said openings extending diagonally downwardly and outwardly, a pair of radial arms connected with the band-like portion on the rear side, and a central ring-like portion located coaxial with the band like portion and connected with the inner ends of the arms and having openings whereby it may be bolted to the hoist frame.

5. A hand chain guide for hoists made of a single integral casting and comprising a band-like portion with space for the passage of the hand chain and rounded tops for the band-like portion, a pair of radial arms connected with the band-like portion at its inner edge, and a ring at the inner ends of said arms, said ring being centered coaxially of the band-like portion and having a tongue extending downwardly between the arms, said tongue having an opening and said ring having openings through the opposite sides thereof for the passage of bolts to secure the guide to the hoist frame.

6. A hand chain guide for hoists consisting of a band-like portion adapted to extend around the under part of the wheel, said portion having two disconnected openings through which the two reaches of the chain may extend, each opening being closed at its upper end by a rounded outwardly inclined portion.

7. A hand chain guide for hoists comprising a band adapted to lie around the under portion of the periphery of the wheel, there being two disconnected openings through the under portion of the band for the passing of the chain reaches, and a cross brace at the rear of'said band connected at its ends with those strips of the band which are at the rear of said openings.

8. A hand chain guide for hoists consisting of a band-like portion adapted to extend around the under part of the wheel,

said portion having openings for the passage of the hand chain, each opening being closed at its upper end by a rounded portion, and a cross brace connected at its ends to the band-like portion and furnishing means for supporting the guide.

9. A hand chain guide made in a single integral piece and consisting of a band-like portion adapted to extend around the under part of ahand-wheel of a hoist and provided with two disconnected openings throughwhich the two reaches of the hand chain may extend, each opening being closed at its upper end by an inclined semi-tubular portion of the guide, and a bracing and supporting portion integrally connected at its ends with the inner portion of the guide and intermediately adapted to extend about a projecting bearing on the hoist frame for the shaft'carrying the hand wheel.

.In testimony whereof, I hereunto afiix my signature.

' EDWARD Y. MOORE.

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

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