US278993A

US278993A - metcalf

Info

Publication number: US278993A
Authority: US
Publication date: 1883-06-05
Anticipated expiration: 1900-06-05

Description

(No Model.) 2 Sheets-Sheet 1.

J. S. METUALP.

GRAIN SHOVEL MECHANISM. No. 278,993. Patented J1me 5,1883.

WJIWLSSEAS'.

jam sJ/ww W l y ii (No Model.) 2 Sheets-Sheet 2.

' J. S. METOALP.

GRAIN SHOVEL MECHANISM.-

Patented June 5, 1883.

PhvIn-Uthugnphqr. Wishingkun. n. c.

UNITED STATES PATENT Orrrcn.

JOHN S. METGALF, OF INDIANAPOLIS, INDIANA.

GRAlNe-SHOVEL MECHANISM.

SPECIFICATION formingpart of Letters Patent No. 278,993, dated June 5, 1883.

Application filed Apri125,1883. (No model.)

.To all whom it may concern:

Be it known that 1, JOHN S. llIE'rcALr, of Indianapolis, Indiana, have invented a new and useful Improvement in Grain Shovel Mechanism, of which the following is a description, reference being made to the accompanying drawings, in the several figures of which like letters indicate like parts.

My invention relates to apparatus, automatic in its action, by which a grainshovel is operated in imloading cars, and will be understood by any one skilled in such matters from the following description.

In the drawings, Figure 1 represents a'front view of my machine; Fig. 2, a top view; Fig. 3, an end view Fig. 4, a cross-section view on the linear, Fig. 1; Fig. 5, a cross-section view on the line y y, Fig. 1; Fig. 6, a longitudinal section of the spool Sp and its screw S and the adjacent parts, showing the main shaft Ms in its place; Fig. 7, a side view of the two parts of the clutch and the steel face Sp,- Fig. S, an end view of one of the jaws of the clutch; Fig. 9, a side view of the tripping-lever t2 and latch I. Fig. 10 is an end view of the same.

In detail, H3 is the main shaft, supported from the frame F by the hangers 71 and h, the latter being shown in horizontal section in Fig. 1, and having anoutside cover-box, hb, recessed at one end to admit the flange of the collar 00, which thus secures the spool. in the same relative position to the frame. By reference to Fig. 6 it will be seen that this collar 00, the spool Sp, and screw S are all one piece of metal, revolving upon the main shaft.

The yoke-arm ya, Fig. 3, is .hinged in the rear to the frame by the hinge 71g, and, passing over the spool, is loosely connected with the frame F in front by a set-screw, 3s, and

0 jam-nut, thus allowing a vertical movement I is arranged to press closely upon the face of the friction-wheel Fw. Its movement is indicated by the dotted lines in Fig. 4.

In Fig. 5 is shown the detail of the construc tion of the T of the trippingarm ta. A radial slot, rs, is formed on the inside of the opening of the T, and a feather is inserted in the shaft 1), so that the part T, whenit has rotated the length of the slot, will lift the weight TV from its rest 3, Fig. 4, and bring it nearly to an up right position, as shown in Fig. 3. A projection, 1, is formed on the T and another, 2, on the yoke-arm, to limit the forward movement of the weighted arm ta. fected by that of the cam, both being mounted on the same shaft, 1).

The friction-wheel F10 is bolted to the spool Sp, as shown in Fig. 6. N is a nut, which travels back and forth on screw S, having pushers p on either side, Fig. 6, and a bar on the top, b, Fig. 2, the ends of which rest and slide on This movement is efframe-plates F and prevent the revolution of the nut. The ends of the pushers have coiled springs attached, which operate to push away and disengage the opposite clutch, c. This clutch has a circumferential groove in its periphery to receive the edge of the shifting-lever S1. A curved arm, ca, bolted to the plates F by its short end, provides a support and bearing for a pivot, 4, that passes through the up per part of the shifting -.lever, which her-e is branched-ohe, and the shorter arm, extending upward, to engage in a notch in the trippinglever fl, and the other, the longer arm, extends to the rear and carries a counter-balance, IV.

The tripping-leverfl swings 011 a pivot, 5, in bearings in the, upper end of the curved arm on, and hasa latch, I, pointed oval shape, pivoted to its forward end, which is adapted to engage with an ovalshaped latch-pin, 2p, fixed on the side of the cam, so that the latch pin The rope r is wound upon the spool and the shovel is fastened to its outer end.

My device operates as follows: If the ropeter-balance XV begins to assert itself. It falls backward, carrying the sector e0 forward, and its grip upon the friction-wheel moves the spool forward until the latch-pin Z1) engages with and passes over the latch, depressing it, and thereby raising the opposite end of the tripping-lever tZ, disengaging it from the short arm of the shifting-lever, allowing the weight IV man, and operating to rush the clutch a forward on the main shaft and engage with the 'clutch c on the spool. This turns the spool forward and winds up the rope, the nut N returnson the screw S until the pushers to'uch the lever S1 and disengage the clutches. The; tripping-lever zZ hooks on again to the arm "of the shifting-lever SI, and the machine is ready for another operation.

It will be understood of course that the clutch c revolves with the main shaft and. slides on a feather, K, inserted in the shaft. A; little stop, 8p, Fig. 2, is fixed on theside off the friction-wheel Fw 'to prevent the nut N from coming in contact with. the frictionwheel. sector cc to the shaft 1).

\Vhat I claim,and desire to secure by Let- 'ters Patent, is the following:

1. In a clutch mechanism, the hinged yokearm 'g a, having an opening at the top to receive the T-trm of the weighted lever ta, the

latter mounted on a shaft passing through hearings in the yoke-arm, which shaftalso supports a cam-sector, cc, in'combinat-ion with such cam, a frlction-wheel adapted to engage with it, and a supporting-frame, substantially as described.

2. In a clutch mechanism, the combination of the spool Sp,the'collar c0, screw S, clutch c, all formed in one piece, the friction-wheel rigidly connected with the spool, a main shaft on which they are mounted and adapted torevolve, a clutch feathered upon such'main shaft, the cam-sector co, the yoke-arm carrying a shaft on which is mounted the cam-sector, and a weighted arm for actuating the same, substantially as described.

3. In a clutch mechanism, an arm'sup iorted upon a main frame carrying a trippiiiglever,

with a latch pivoted at one end and adapted to A set-screw, as, is used to secure the engage with a latch-pin attached to a ca1n-sector and to be tripped by the mechanism of a weighted arm mounted on the same shaft as the cam, substantially as described.

4. In a clutch mechanism,the cap 71b, secured to the main frame and recessed to admit the flange of a collar rigidly connected with the rope-spool for holding the latter in the same relative position with the frame, substantially as described.

5. In a clutch mechanism, the combination of the yoke-arm ya, the shaft 1;, the weighted arm fa, the cam cc, the friction-wheel Fw, connected with the spool, a main shaft, and a supporting-frame, substantially as described.

6. In a clutch mechanism, a cam mounted on an axis supported in bearings above the main frame and adapted to control the forward and reverse movements of the clutches by its grip carrying 'a' shaft in bearings, a cam-sector secured to and revolving with such shaft and adapted to'engage with a friction-wheel mounted on the main shaft, one of the supports or standards of such secondary frame being loosely connected withthe main frame by a setscrew or its equivalent to allow vertical motion for gaging and determining the frictional bearing of the cam on the friction-wheel, substantially as described.

9. In a clutch mechanism, a cam sector mounted on a shaft in bearings above the main frame and adapted to engage the face of a'fricthis 20th da} of April, 1883.

JOHN 'S. METGALF. Vitnesse's:

C. P. JACOBS, J ACOB W. LOEPER.