US1798919A - Compensating mechanism - Google Patents

Description

March 31, 1931. R, 1 WILCOX 1,798,919

COMPENSATING MECHANT SM Filed May 25, 1927 'lill/711111111110110 O OJIII'CIMIO p n? i- Il O il lNvENToR Imm, l Pic/mrd Lester h/'lca' l l \l om@ q O2 O @w A To NEX Patented Mar. 31, 1931 .RICHARD LESTER WILCOX, OF WATERBURY, CONNECTICUT, ASSIGNOR IO THE WATERBURY FARREL FOUNDRY ANI) MACHINE COMPA NECTICUT, A CORPORATION 0F CONNECTICUT ooMrENsA'rme MECHANISM Application filed May 23, 1927. Serial No. 193,650.

This invention relates to compensating mechanism, particularly as applied to heading or upsetting machines, although not limited thereto. It is the object of the invention, among other things to provide a simple and effective device of this character which will `insure the full stroke of the punch slide at the variable limits of its stroke "without adjustment of the parts from which it derives its power, and further, to provide in its structure a certain definite part that will break, if the punch slide, for any reason is held in a locked position, when under normal conditions it should be free to move.

With these, and other `objects `in view,` as will more fully appear, the invention consists of certain features of novel construction, and arrangement of parts as described and illustrated in the accompanying drawings, and particularly pointed out in the claims, it being understood, however, that within the scope of what is claimed, changes in Jform, proportion, size and details of construction may be made without departing from the spirit or `modifying any of the ad-` vantages of the invention.

Referring to the drawings in which like' numerals designate, like parts" inthe several figures. Y

Figure 1 is a side elevation of a portion of i a header or upsetting machine with my new and improved mechanism associated therewith' y y C Figure 2 is a fragmentary transverse sectional view thereof, taken generally upon line 2-2 of Figure p "A heading, upsetting machine or thelike tacts with' a part 19 or the like and thus limits NY, 0F WATERBURY,` CON- the down position of the punch slide, and the i l ,posite sides of the headthereoit and fixed in the punch slide, and a movable locking bolt also having angular faces upon opposite sides of its outer end. This locking bolt actuated by mechanisms (not shown)` toward and away from the punch slide rides either on the top of or in underneath the locking stud 49 thus locking the `punch slide either against the stopV screw 17 or the nuts 16 in its down or up positions respectively.`

Movement of the punch slide 12 relatively to the gate 10 is derived from the rock shaft 20 j ournaled in the body member 11 or other part and having an operative connection with the foot plate 21 connected with the slide and the cradle 22.` y

The mechanism above described is old in the art and with the exception of the operative connection between the rock shaft and part of my present mechanism located between the source of power (rock shaft) and the punch slide for imparting relative movement to the punch slide on the gate, whereby, irrespective of the length or position of the stroke of the punch slide, the mechanism will operate and adjust itself automatically to such differences in stroke; and further, it perchance the punch i slide should be in any one of its :locked posiico tions, and thus held against movement, my improved mechanism will either accommodate itself to these new conditions, or a readily replaceable part will break without causing injury or damage to other more costly and not so readily replaceable parts.

In the drawings, 23 designates the shaft journaled in the body member of the machine or other parts, having th-ereon a journal block 24, which is slidable between the walls of the slot 25 in the connection arm 26. This arm derives lengthwise movement from a cam 27 on the rock shaft 23, through a roll 28 journaled on the stud 29 fixed in said arm. Fixed on the rock shaft 20 is an arm 30 having therein stop screws 3l which are locked in their adjusted positions by the nuts 32. Journaled on the rock shaft 20. adjacent to the arm 30, is the rock member 33 having a radial slot 34 therein, and provided at one end with a head 35, and at the other end with a vbase portion 36, having the pockets 37 and lugs 38, through the latter of which are the screws Projecting through the slot 34,-is a stud 40, upon which is journaled the bushing 4l fixed in the yokeend 42 of the connection arm 26, with nuts 43 and 44 upon opposite ends thereof. The position of this stud 40 toward and away from the rock shaft 2O is determined by the sleeve 45 threaded into the rock member 33 with its inner' end impinging against the stud 40 and the lock screw 46 rotatable therein and threaded intoV the stud 40. By manipulation of the sleeve 45 and lock screw 46 the stud 40 can not only be moved toward and away from the rock shaft but can be securely locked in any of such adjusted positions. Upon opposite sides of the-center of the rock shaft 20 are the two pairs of flat flexible plates 47 the lower end of each pair projecting into one of the pockets 37. The screws' 31 contact with the inner of these plates 47 near the outer end, and near the lower end thereof the screws 39 contact with the outer of these plates. Varying tensions of the plates 47 are derived from the screws 39. When the mechanism is in its normal position the tension of the plates 47 is against the head 35 and there is a slight clearance between the screws 31 and the inner of the two plates 47 so that one set of the plates is not counteracting the opposite set. Vhile I have illustrated these plates as being arranged in pairs, a single plate, or more than two in each set.` may be substituted for those shown. Lateral movement of the plates relatively to the rock member 33 is prevented by the lugs 48 on the head 35. Y

In operation. motion is transmitted to the rock shaft 20 from the shaft 23 through the connection arm 26, which imparts a rocking movement to the member 33 and through the plates 47 to the arm 30.

The position of the stud 40 is such as to impart approximately such a rocking movement to the rock member 33 as will give the requisite reciprocatory movement to the punch slide l2 on the gate 10. This adjustment, however, is only approximate and if there is still motion left in the connection arm 26 after either one of the extreme movements of the slide 12 has been reached, then such excess movement irs absorbed bythe yielding plates 47, the' plates upon onel side of the rock member 33 yielding at the limit of one movement of the stroke of the punch slide and the plates upon the opposite side yielding at the opposite limit.

If any of the mechanism that imparts reciprocatory movement to the gate should break or become disarranged in its parts, such contingency and others, may prevent the disengagement of the punch slide locking mechanism. Thus, the punch slide will be held against relative movement in the gate. In such case, the mechanism for reciprocating the slide. relatively would ordinarily break. `With' my device, however, in s uch contingency, the flexible plates 47 will be-4 called upon to yield considerably more than normally yand perhaps sufficiently to permit the operation of the connection arm 26 without imparting movement to the punch slide l2. If, however, the plates should not yield sufficiently for this purpose, one set would break, thus permitting the operation of the connection arm 26 and associated parts withoutimparting movement to the slide 12.

The plates 47 are comparatively inexpensive andreplacement' ofy one or more thereof, if broken, will restore the mechanism to its normal condition with the minimum expenditure of time and labor.

What I claim as new is l l. In a mechanism of the character described, a shaft, anV arm yonv said shaft, a rock member journaled on the shaft having a head formed with recessed lugs upon each side thereof and a foot having pockets therein, a yielding member on each side of said rock memberhaving an end received in one of said pockets and having its oppositeA end slidably projecting through one of the recessed lugs and engaging vsaid arm, and means for actuating said rock member.

2. In a mechanism of the character described, a shaft, a. radially projecting arm carried by said shaft, a rock member journaled on said shaft adjacent the arm, said rock member havin-g a foot formed with a pair of spaced pockets, and a head formed with a pair of spaced openings, a pair of spring members, each of said spring members having an end receivedV in one ofsaid pockets and having its opposite endV projecting through and beyond an opening in the head and engaging said arm, and means for actuating the rock member.

3. In an operating mechanism .for punch slides, a shaft, an arm on said shat, a rock member journaled on the shaft having a head and a foot, a yielding member on each side of said rock member having an end engaged with the arm and adapted to break upon jamming of the punch slide or locking thereof against movement, means carried by the head for slidably engaging each member between the ends of the latter, means to adjustably connect each member to the foot, and means to actuate said rock member.

4. In an operating mechanism for punch slides, a. shaft, an arm on said shaft, a rock member journaled on the shaft and having a head and a foot disposed on opposite sides of the shaft, resilient means on each side of the rock member said resilient means being adapted to break upon jamming of the punch slide or locking thereof against movement, adjustable means carried by the arm on each side thereof and engaged with the adjacent ends of the resilient means, means to guide Jthe resilient means :from the head, means to adj ustably connect the resilient means to the foot, and means for actuating said rock inember.

In testimony whereof, I have hereunto affixed my signature.

RICHARD LESTER WILCOX.

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