US361764A

US361764A - johnson

Info

Publication number: US361764A
Authority: US
Publication date: 1887-04-26
Anticipated expiration: 1904-04-26

Description

{sheets-sheet '1.

(No Model.) I

J. B. JOHNSON.

BALING PRESS;

No. 361,764. Patented Apr. 26, 1887.

llllll n WITNESSES. IJV'TOR.

(No Model.) 2 SheetsS heet- 2.

J. B. JOHNSON.

BALING PRESS.

No. 361,764. Patented Apr. 26, 1887.

WJWM

UNITED STATES V PATENT OFFICE.

JESSE B. JOHNSON, OF INDIANAPOLIS, INDIANA.

BALlNG-PRESS.

SPECIFICATION forming part of Letters Patent No. 361,764, dated April 26, 1887.

To all whom it may concern.-

Be it known that I, Jnssn B. J OHNSON, of the city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements inBaling-Presses, of which the following is a specification.-

The object of my said invention is to produce an improved gear by which a constantlylncreaslng. power may be communicated to a plunger, piston, or such like part of a machine as it nears the end of its stroke.

It consists, essentially, of a rack bar so mounted as to be capable of a vertical as well as horizontal movement and connected to such plunger or piston, and a cogged cam or eccentric, which is adapted to engage with said rack-bar, commencing at the point farthest from the shaft, the point of engagement gradually approaching said shaft as the stroke or movement progresses, as will be hereinafter more particularly described and claimed.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l is a top or-plan view of mechanism embodying my said invention; Fig. 2, a side elevation of the same, the frame-work being shown in section; and Fig. 3 asimilar view to Fig. 2 of an alternate construction.

In said drawings, the portions marked A rep- -resent a frame-work; B, the main shaft of the mechanism; G, the eccentric cogged segment; D, the rack-bar; E, camarms for bringing the rack-bar into proper position to engage with the cogged segment, andF the plunger or piston which is directly operated upon.

The frame-work A is of course any suitable frame-work inwhich the machinery may be mounted, and is usually an extension of the frame-work of the press or other machine in connection with which this mechanism is used.

The main shaftB carries the eccentric cogged segment 0, the curved arms E, and usually a spur gear-wheel, B, through which said shaft is driven from a similar gear-wheel, b, on a driving-shaft, B, the latter being commonly driven by a belt running to the pulley I). This mechanism, however, is of any ordinary and well-known character, which maybe varied at pleasure, and this invention does not de- Application filed June 26, 1886. Serial No. 206,288. (No model.)

pend thereon in any manner, as the shaftB may be driven by any means or mechanism desired.

'The cogged segment G is, as before stated, set eccentrically to the shaft B, and is securely mounted thereon. It is so formed that it only operates while the cogs are in engagement with the rack-bar, thus permittingsaid rack-bar a return movement as soon as said cogged segment has escaped fromengageinent therewith.

The rack-bar D is, as before stated, so mounted as to be capable of rising as well as moving forward. In the principal drawings the means of doing this is an inclined surface formed on the under side of the rear portion of said bar, which rests on and moves over a truck or roller, a, mounted in a bearing, A, on the frame A. The incline is just sufficient to keep the cogs of the rack-bar in engagement with the cogs on the segment 0, and thus as said segment revolves it drives said rackbar'and the plunger or piston F (to which it is connected) forward with an ever-increasing power, subjecting whatever is being operated upon to a constantly-increasing pressure.

In Fig. 3 the rack bar D* is shown as mounted on swinging links D D which are secured to said rack-bar by pivots d d and to bearings on the frame-work by pivots a a As it is necessary that the rack-bar should travel a greater distance than the length of the cogged surface on the segment 0, and it being desirable in this construction that the rackbar should travel horizontally until it reaches the point where it begins to engage with said segment, the upper ends of these swinging links are slotted for a distance equal to that which the rack-bar travels before such engagement with the toothed segment 0. The rackbar is also divided into two parts pivoted together, and one portion is in the form of a connecting-rod, as shown.

It will be seen that as the rack-bar is driven forward by the cogged segment 0 it must also rise correspondingly, and thus, notwithstanding the eccentric character of said segment, said rack-bar and said segment will be kept in engagement for the whole length of the cogged portion, while, as before stated, owing to the fact that the cogs 011 the segment are nearer progresses.

the shaft during the latter portion of its stroke, O

the power is materially increased as said stroke The arms E are also secured to the shaft B and extend down and engage with projections on the rack-bar D, which are preferabl y in the form of anti-friction rollers (Z, and these parts are so adjusted that the rack-bar will be brought to just that point where the first tooth of the cogged segment will engage with the first tooth of the rack-bar as the parts arrive in their movements at the positions shown in the drawings.

The plunger or piston F is ormay be of any usual or desired construction. As shown, it is of a form commonly employed in presses for pressing hay, cotton, excelsior, or such other fibrous matter into bales; and my invention is particularly designed for and is peculiarly adapted to such presses, although I desire to be understood as claiming the mechanism or mechanical movement herein described for any purpose to which it may be applied.

As a means of strengthening the mechanism at the point where the greatest strain comes thereon just before the cogs on the segment 0 escape from the cogs on the rack-bar D, Ihave inserted in said rack-bar an extended cog, d

preferably formed of tempered steel, and have secured to the sides of the final cog on the segment 0 supplemental cogs, 0, also preferably formed of tempered steel, which engage with the extended cog d on the rack-bar, and thus the danger of breakage at the time the final cog on-the segment slips from its engagement with the cog on the rack-bar is reduced to a minimum. This final cog is also surrounded by a casing, (see Fig. 1,) which enables the space behind it to serve as an oil-box, and thus said final cog is always kept lubricated by keeping oil in this box.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

of said segment or rack being also formed of greatly increased strength, whereby said parts are enabled to successfully resist the great strain thrown upon said final cogs at the terr mination of each stroke, substantially as setv forth.

2. The combination of the shaft B, means for driving the same, the toothed segment G, mounted on said shaft, the rack-bar D, rest1 ng and adapted to slide on the bearing a, an 1 nclined surface being formed directly under said rack, and the arm E, secured to the shaft B and arranged to operate against a bearing on said rack-bar D, all substantially as set forth.

3. The combination of the eccentrically-set cogged segment 0, the rack-bar D, adapted to engage therewith and having contact poln't or projection 01, and the arm E, secured to the same shaft as the segment 0, for bringing said rack-bar to the proper position to engage with said segment, substantially as set forth.

4. The combination, in a baling-press, of the eccentrically-set cogged segment 0, the last cog of which is formed of greater strength, the rack-bar D, with which said segment engages, also formed with an extended or re-enforced cog, d and means for raising said rack-bar as said eccentrically=set segment revolves, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 18th day of June, A. D. 1886.

JESSE I3. JOHNSON. [L 5.]

In presence of- O. BRADFORD, OHARLEs L. THURBER.