US281293A - Attachment foe - Google Patents

Description

(No Model.) a

J. W. OSTRANDER.

v ATTACHMENT FOR APPLYING POWER TO MAGHINERY. v No 281,293. x Patented July 17, 1883.

UNITED STATES PATENT JOHN w. osrnnnnnn, or CHICAGO, ILLInoIs.

ATTACHMENT F OR APPLYING POWER TO MACHINERY.

SPECIFICATION forming part of Letters Patent No, 281,293, dated July 17, 1883.

Application filed November 20, 1882. (No model.)

To all whom it may concern:

Be it known that I, JOHN W. Os'rnnnnnn, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in an Attachment for Applying Steam-Power to Stereotype-Shaving Machines; and I do hereby declare that the following is afull, 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 an attachment for applying steam power to stereotype-shaving machines, which is simple in construction and can be applied to an old or new machine.

Most of the machines heretofore used have been operated by a spoke-lever, which requires the operator to attend to the proper adjustment of the stereotype or electrotype plate on the bed, and at the same time make a great physical effort to operate the machine. I avoid these objections by a simple and direct application of steam-power by simple machinery.

In the drawings, Figure 1 is a plan view, Fig. 2 is a side elevation, and Fig. 3 is a detail view, of my invention.

A represents the usual frame or table, supporting a bed-plate having a ledge across one end, against which the plate is held as the planer B is urged over it, shaving it to the requisite thickness by means of racks B, extending back from the same, which are engaged by pinions fast on the shaft 0.

In the old machine the spoke or hand lever, which was placed on one end of the shaft 0, was utilized both for the purpose of advancing and withdrawing the planer to and from the work.

My invention avoids the necessity for such tiresome work by performing the cutting movement by means of steam-power through the medium of the following machinery:

On the shaft C,between its bearings and the spoke-lever, is a large gear-wheel, c, which is driven by the pinion b, fast on the contiguous end of the transverse drive -shaft D. This drive-shaft is journaled in the side frames of the table A, and is so placed that the pinion b meshes with the gear 0 below the plane of the bed-plate.

On the end of the drive-shaft opposite to that on which is placed the pinion b, I place a loose pulley, d, which has a beveled frictional surface, cl, under its rim, on the side facing the table. Engaging this frictional surface is a friction-clutch, E, having a correspondingly-beveled periphery, which has a longitudinal motion on the shaft D, but is prevented from independently revolving thereon by a spline in said shaft, which enters a corresponding mortise in the bearing-surface of the same.

In the boss of the clutch E is a circumferential groove, 6, in which the prongs of a fork, f, enter. This fork f is fixed on the contiguous end of the lever F, which is placed at right angles to the drive-shaft l), parallel. to the side of the frame A, and is fulcrumed at or about its center of length in the end of a stud projecting from said side frame.

Pivoted to the end of the lever F farthestfrom the driveshaft is a connecting-rod, g,the other end of which is pivoted to an arm, 9, projecting vertically from a suitable boss made fast to the rock-shaft G. The rock-shaft is placed counter to the-drive-shaft under the be d-plate of the machine, and is j ournaled in the end frame at one end and in a suitablehanger depending from the under surface of the bedplate at the other. It is operated by a treadle, H, which has a vertical rod connecting it to an arm projecting horizontally from and fast on said shaft. Thus when a plate is to be planed the planer is moved back from the ledge across the end of the bed plate a suitable distance by means of the spoke-lever. The plate is then adjusted, and then the foot pressed on the treadle, thus transmitting the motion of the loose pulley to the frictionclutch, which imparts its motion to the driveshaft, enabling the machine to perform the cutting movement.

It is obvious that by placing a coil-spring of sufficient tension on the rock-shaft, fastening one end in the same and the other end in the frame, so that when the foot was pressed on the treadle and the rock-shaft oscillated it would unwind, when the foot was removed the spring would restore the connecting and contingent machinery to their normal position, thus disengaging the clutch and stopping the machine; but this would make the cutting movement of the machine dependent on the operator; and while I do not consider the 'troduction of the above element beyond the scope of my invention, yet I would like to make the cutting movement'of the machine automatic as far as possible, so as to avoid any possibility of the machine being injured by the negligence or ignorance of the operator. This I accomplish by the vertical lever K, which is pivoted near its center of length in the end, a stud projecting from the side frame, the lower end of which is forked and enters the circumferential groove 6 in the boss of the friction-clutch, the upperpart of the lever, above its pivotal point,being curved in toward the rack, near which it terminates.

On the side of the rack, near its end farthest from the planer, is a projecting cam-surface, 70, in such a position thereon that when the planer hasreached the ledge the cam-surface 70 will engage the upper end of the lever K, forcing it outward and the lower end inward, thus disengaging the clutch and stopping the machine.

A noticeable feature of my invention is the direct action of all of the devices used in it. There are no springs or other mechanism that will weaken, all performing their functions until they are completely worn away. In

such an event they can be easily replaced.

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

1. The combination of the friction-clutch having a circumferential groove, 6, in its boss, the lever F, having a vertical forked end which enters said groove, connecting-rod 9, arm g, rock-shaft G, and treadle H,for operating the same, being connected by a chain or vertical rod pivoted or connected to an arm projecting therefrom, as and for the purpose set forth.

2. The combination, with the clutch E, of the lever K and rack, having a cam-surface, is, projecting therefrom, substantially as and for the purpose set forth.

3. An attachment for applying steam-power t0 stereotype-shaving machines, consisting of a treadle, H, rock-shaft G, connecting-rod g, and lever F, for engaging the clutch E with the loose pulley 011 the end of the drive-shaft, said pulley thereby imparting its motion to the spoke-lever shaft through the medium of said drive-shaft, pinion b, and gear 0, and the lever K and cam-surface is, for automatically disengaging said clutch and stopping the ma chine, substantially as described.

In testimony that I claim the foregoing as my own I hereunto affix my signature in pres. ence of two witnesses.

JOHN NV. OSTRANDER.

XVitnesses:

JAMES H. CoYNn, FRANK D. THOMASON.

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