US416733A - Lifting and compressing device - Google Patents

Description

(ModeL) S. B. MINNIGH.

LIFIING AND COMPRESSING DEVIGE. No. 416,733. Patented Dec. 10, 1889.,

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SIMON B. MINNIGH, OF LANDISVILLE, PENNSYLVANIA.

LIFTING AND COM PRESSING DEVICE.

S P ECI FIGATION forming part of Letters Patent No. 416,733, dated December 10,1889.

' Application filed August 1, 1888. Serial No. 281,642. (Model) To all-whom it may concern:

Be it known that I, SIMON B. MINNICH, a citizen of the United States, residing in Landisvill'e, in the county of Lancaster and State of Pennsylvania, have invented certain Improvements in Lifting and Compressing Devicesfof whichthe following is a specificaa tobacco, hay, and other similar presses; and

my o bject is to use eccentrics with grips attached to the eyes thereof for that purpose,

preferably employing two, moving about the same center of motion, those adjacent to each other having their greatest eccentricity on opposite sides of that center.

My'invention consists in the combination of a hanger having a drop connected there with supporting an eccentric-shaft, eyes fitting over the eccentrics and pivotally connected with grips which engage tension rods or racks.

"My invention consists, also, in the peculiar construction of the drop attached to the hanger, as will be hereinafter fully described and claimed. 1

In the accompanying drawings I show a portion of an end and sideof a press for which Letters Patent' No. 3f56,339 were granted meJuly 12, 1887, to-illustrate the applica' tion of my invention to a press.

Figure 1 is a side view of my device, the drop being taken up and" the upper grip biting on the tension-rod. Fig; 2 is a front view of the same, the tension-rod being partially cut away. Fig.3 represents a front view of the eccentric-shaft detached and in the position occupied by it in the two previous figures, the eyes being in section. Fig. 4 is a side view of the drop extended, and Fig. 5 a top view of the same when taken up. .Fig. 6 shows the pawl'and-ratchet attachl'n ent; Fig. 7, a side view of the rack-bar, and Fig. 8 a top view of the grips used therewith. Fig. 9 represents the device supported by atripod.

In the drawings, 0 represents the press, and S the press-beam.

a a are jaws rigidly secured to the lower portion of the sectional hanger A A.

B is a shaft journaled in those jaws.

J represents an eccentric formed upon the 8 center of the shaft B, and D D are smaller eccentrics on each side of it, having their greatest eccentricity on the side of the shaft opposite to that of the center eccentric.

There is a slot L cut through the upper end of the section A of the hanger, by means of which it is connected with the press-beam when the device is used with a press, or by which it is engaged by a hook when supported by a tripod.

E is the eye fitting over the eccentric J, and has the arm e rigidly attached thereto. To this arm, jaws f f, formed integral with the annular grip F, are pivotally connected. Eyes G G fi-t over the eccentrics D D in a similar manner, each one being provided with an arm g, rigidly secured thereto. Each arm has an aperture through the outer end, through which a pin H passes, the annular grip Kbeing loosely connected with the pin between those arms by the arm k,formed'integral with the grip.

A tension-rod I is secured to the bottom of the press or any body to be raised, and this As the grips are supported on one side only,

they set diagonally about the tension-rod 'I when engaged therewith, as shown in Figs. 1 and 9. This position causes the lower front edge of the openings through the grips and the upper rear edge of the same to bear against the rod I, sothat when the movement of the eccentric with whicheither grip is connected tends to raise it those edges bite into the tension-rod and gripv it firmly. So, too, the lowering of the grips asthe eccentrics descend with the revolution of the shaft causes them to slide down the tension-rodpreparatory to again taking hold of it as the eccentrics rise. The instant the eccentric to which one of the grips is attached begins to rise that grip takes hold of the tension-rod and maintains its grasp until the eccentric again begins to descend, when it immediately loosens its. grasp; and as the eccentrics supporting the two grips are opposite each other as soon as one eccentric begins to rise the other begins to descend, so that the moment one grip takes hold of the tension-rod the other loosens on it and slides down to again grasp it. In this description of the action of the grips the two eccentrics D D, to which the grip K is attached, are regarded as one, they being arranged in the manner described to keep the centers of the grips in the same vertical plane. In the application of my device to a press, as illustrated in the accompanying drawings, each grip alternately draws upon the press-beam S as the eccentric to which it is attached riseswith the revolution of the shaft B.

When the bite of the grip on a smooth rod is not sufiicient toprevent them from slipping, a rack-bar T (shown in Fig. 7) may be used. This bar I make fiat and the ends of the rack rectangular.

The shaft may be rotated by means of a crank M or by alever N, loosely connected with the shaft, held in place by a nut m, and carrying a pawl n, which engages a ratchet p, rigidly secured to the shaft.

The result of the action attained by the use of double eccentrics and grips herein described could be accomplished by the use of one, although it would require double the number of revolutions of the shaft to perform the same amount of work. In this case but one of the grips is connected with ,an eccentric, while the end of the arm to which the other is pivoted is secured to the press-beam. As the grip connected with the eccentric draws upon the tension-rod and pulls the press-beam downward the other or second grip slips down the tension-rod, and when the first grip loses its hold as the eccentric passes beneath the shaft the upward pull of the press-beam engages the second grip with the tension-rod, and the beam is thereby held down until thete'nsionrod is again grasped by the grip connected with the eccentric.

When used to extract stumps or raise bodies from the ground, the device is upheld by a tripod, the slot L of the hanger being engaged over a hook Qdependent from the apex thereof, as shown-in Fig. 9, or is supported in any other convenient manner.

'A A represent the two sections of the hanger. These are connected by a link Q, pivoted to their inner ends. Recesses R are formed in the adjacentfaces of those ends of the hanger-sections, as shown in Figs. 1 and 4, to throw the link as nearly in the direct line of strain as possible when the drop is doubled up. lVhen so doubled up, the

inner ends of the sections A and A lap each other, throwing the point of connection of the link with the upper section below and in a vertical line with that of the lower. In this position the upper end of the link, which projects beyond the end of the section A, is

engaged on both edges by a stop V on a hand -lever WV, pivoted at y to the section I A. These stopspre-vent any accidental opening of the drop. I prefer these drops, as

when opened they hold the parts together, and when used on a press prevent the pressbeam from being thrown out of the slots in which it works by the reaction caused by loosening the grip of the device upon the tension-rod. In lifting a weight this is not P so important, and any kind of a drop may be used.

Having thus described my invention, what' I I claim: as new, and desire to secure by Letters Patent, isopenings tl'irough the grips that engage the 1. The combination, with the eccentricshaft, of eyes fitted over the eccentrics of the shaft, grips pivotally connected with the eyes,

' and the tension-rod, substantially as and for the purpose specified.

2. The combination, with the shaft having a central ty-located eccentric and an eccentri'c formed on each side thereof, the center eccentric having its greatest eccentricity on the side of the shaft opposite to that on which the greatest eccentricity of the others is placed, of an eye E, fitting over the center eccentric, having an arm rigidly attached thereto, and a grip having jaws f f formed integral therewith, between which the arm of said eye is pivoted, eyes G G, fitted over the side eccentrics, each provided with a rigid arm g and a grip K, having an arm formed integral therewith, and pivoted between the arms g, and a tension-rod, substantially as specified.

3. The combination, with a hanger divided into two sections, of a link pivotally connected with said sections, and a handlever pivoted to one of the sections and provided with stops for engaging the end of the link when the ends of the sections lap each other, substantially as and for the purpose specified.

4. The combination, with the sectional hanger, of a link pivotally connecting the sections, and a stop adapted to bind the link and sections together when the ends of the sections lap each other and prevent the extension of the sections and the link, substantially as specified.

SIMON B. MINNICH.

Witn esses Gno. A. LANE, WVM. R. GE'RHART.

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