US228407A - Assigknoe to william h - Google Patents

Description

H. T: SPENCER. Stop-Motion for Railway-Heads.

Patented June 1,1880.

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Witnesses: v @7226 N.PETERS, PHOTO-LITHOGRAPHER, WASHINGTON, D C

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HENRY T. SPENCER, OF \VATERVILLE, MAINE, ASSIGNOB TO WILLIAM H. K. ABBOTT, OF SAME PLACE.

STOP-MOTION FOR RAI LWAY-HEADS.

SPECIFICATION forming part of Letters Patent No. 228,407, dated June 1, 1880.

Application filed January 5, 1880.

To all whom it may concern:

Be it known that I, HENRY T. SPENCER, of \Vaterville, in the county of Kennebec and State of Maine, have invented certain new and useful Improvements in Stop-Motions for Railway-Heads; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of my invention is to provide a simple, quick-working, and easily-adjustable stop-motion for raihvay-heads; and the novelty consists, in general, of certain changes in the construction and combination of the parts, whereby the sliver is prevented from lapping, the rolls kept clear, and the stop-motion is entirely within the body of the machine, readily adjustable, and is provided with an alarm mechanism, and in kindred details, all as will now be more fully set out and explained.

Having thus described the nature of my invention in general terms, I now proceed to set forth in detail its construction and mode of operation, reference being had to the accompanying drawings, in which Figure 1 shows front elevation. Fig. 2 shows section through 00 m of Fig. 1 with alarm mechanism omitted. Fig. 3 shows plan or top view with parts cut away.

B B are the calender-rolls of a railway-head. A is trumpet, and A trumpet-standard. Attached to the standard A are two plates or clearers, (of suitable material,) a and a, the edges of which come near the surface of the upper and lower rolls, respectively. The edges of these plates or clearers a and a are presented to the'rolls in such a way that they may serve to scrape off any substance which adheres to them.

The trumpet-standard A is secured to the shaft 0, which is held in its bearings c c. Fastened to another part of the shaft 0 is the lever D, which extends back under the bed of the machine; and on the back end of the lever D, which is free to move up and down as the shaft 0 turns, is a plate, D, containing the vertical slot d. Passing through the slot (1 is the end of the bent lever E, the other end of which is secured to the cam or button F, pivoted at f.

G is a lever pivoted at g, one end of which 5 touches the under side of the cam F. The cam F is of such form that whatever way it may be turned it bears down the end of the lever G, which is directly beneath it, and raises the opposite end G.

Hinged to G. at G is the vertical rod H, extending downward and held from any lateral movement by the guides or bearings k and h. It is, however, free to move up and down.

A spiral spring, h, is on the rod H, so placed that it forces the rod H downward at all times, and the adjustable stop h-, against which the spring bears, may be moved up or down on the rod, thus varying the tension of the spring h.

The lower end of the rod H fits into a notch,

i, in the horizontal rod I. On the rod I is the spiral spring 6, which would force the outer end of the rod I against the belt-shipper J were it not held back by the end of the rod H fitting into the notch t. K is the loose pulley.

On the under side of the bed of the machine is a hell, 0, and extending downward from the bell, its upper end being in position to strike it, is the lever M. This lever is pivoted at m, above which is attached a spring, N, which draws the upper end of the lever toward the bell O.

The lever M is prevented from coming against the hell 0, when the stop-motion has not been sprung, by its rounded lower end coming against the semicircular projection m on the top side of rod I.

Having thus described the construction of my invention, I now proceed to describe its mode of operating.

When the sliver of cotton is passing through the trumpet its tension holds the lever D in about the same position at all times, though 5 there will be a limited vibration up and down. hen, however, a lump passes into the trumpet or the sliver breaks, the end of the lever D is either lifted or allowed to fall by its own weight, so that one end or the other of the slot (1 hits the end of the lever E, which passes through it. The motion of lever E is communicated to cam I, and this cam turning either way forces down one end of the lever Gr, raising its opposite end G, bearing the rod I-I. Rod H is lifted out of its notch t in the rod I, and the spring t" is then free to force the shipper J, carrying its belt, upon the loose pulley K, as shown by dotted lines, Fig. 1, and the machine is stopped. \Vheu the shipper J is pushed back into place to start the machine the notch t moves back and allows the end of the rod H to fall into it, and the stop-motion is then set and ready to operate, as above described. The clearers a and a ordinarily scrape off what substances stick to the calender-rolls B B, either foreign matter or the sliver itself, which sometimes winds itself around the roll and, breaks it. If anything does stick to the rolls which the scrapers cannot easily remove, the trumpet-standard A is thrown back by the substance striking the edge of one of the clearer-s, and the machine is stopped, as before described. When the rod I is forced outward by the action of the spring i, the projection in, coming against the lower end of the lever M, draws the upper end away from the bell O, and as the lower end passes over the projection on the spring N pulls the upper end of the lever M against the bell 0, thus striking the alarm. The object of this alarm is to notify the operative, who generally has charge of more than one machine, that the railway-head has stopped.

It will be observed that the force applied to the rod II must be sufficient to overcome the tension of the spring h, but the tension of h can be regulated by the stop h, and in this way I can make my stop-motion more or less sensitive-that is, I can make a greater or less force exerted at the trumpet, and thence to the rod H, necessary to stop the machine.

The manner in which the cam F acts on the lever G is such that it takes a greater force acting upward on the lever E to stop the machine than downward. This is desirable from the fact that when a sliver breaks the weight of the lever D is what is exerted on E to stop the machine, while it may be necessary to allow a much greater pressure in the other direc tion without springing the stop-motion.

The form of cam F may be made so that a still greater difference will be required between the upward and downward force exerted by the lever D.

It is evident that a considerable variation can be made in the manner of constructing my invention without essentially changing its principle. Many different forms of alarm may also be used.

Instead of notch via pin may be used. Spring It may also be applied to lever G with the same effect as at H.

The principal advantages which my stopmotion possesses over those hitherto in use are that it prevents the sliver from lapping, keeps the rolls clear, forms a simple, easily made, cheap, and readily-adjustable stop-motion,not liable to get out of order. It is entirely within the body of the machine, and it is provided with an alarm mechanism.

What I claim as new, and wish to secure by Letters Patent, is

1. In a railway head, the combination of trumpet A, clearers a a, shaft 0, and lever D, having slot d, with rod H, spring h, and intermediate mechanism between lever D and rod H, and rod I, notch 6, spring 1, and projection m, and the alarm mechanism, substantially as and for the purposes set forth.

2. In a railway-head, the combination of the lever D, having slot 01, lever E, cam I and lever G, with rod H, spring h, and rod I, with its spring 'i and projection m, and alarm mechanism, substantially as and for the purpose set forth.

3. In a railway-head, the combination, with alarm mechanism, of rod H and spring h, rod I, and belt-shipper J, the rod I having notch i, spring 1', and projection m, to operate the said alarm, substantially as and for the purposes set forth.

4. In a railway-head, the combination of rod 1, having notch i and spring 1', rod H, lever D, and intermediate mechanism between rod H and lever D, consisting of lever G, cam F, and lever E, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I aflix my signature in presence of two 100 witnesses.

HENRY T. SPENCER.

Witnesses:

S. W. BATES,

A. H. PLAISTED.

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