US66222A - X x x x x - Google Patents

Description

No. 66,222. PATENTED JULY 2, 1867.

A. CUNNINGHAM & A. SHARP.

POWER HAMMER.

3 guitar; istas gaunt @iftrt.

ALBERT CUNNINGHAM AND ALONZO SHARP, 0F SALEM, 01110.

Letters. Patent No. 66,222, dated July 2, i867.

IMPROVED POWER HAMMERr T0 ALI; WHOM IT MAY CONCERN: Y

Be it lrnown'that we, A. Comment: and SHARP, of Salem, in the county of Golumbiana, and State of Ohio, have invented certain new and useful improvements in Power-Hammers; and we do hereby declare that V the following is a' full and complete description of the same, reierencebeing had to theaccompan'ying drawings, making a partof this specification, in which Figure 1 is a side view of the hammer. Figure 2, a rear end view. I Figure 3, a top view.

Figure 4, a front view.

Like letters refer to like parts in the difl'erent views.

A, fig. 1, is the bed-plate of "the-hammer, from which project the stays B, between the checks of which is mounted a pulley, G upon the shaft D journalled in the stay, as shown in the drawing. On the inner end of the shaft is keyed a crank-wheel, E, the purpose of which will hereafter be shown. F, fig. 1, is a standard, in

- the upper part of which iscnt a-slot, G, (figs. 2 and 3,) to which'is fitted a lag, H, and secured in the'slot by apair of washers, I. Immediately below the lower end of the slot is a lug,'J, through which passes the rod K, which also passes throu'ghthe adjustableflug H. Al; the'upper end o.the rod is placed a collar, L, between which and the adjustable lngH is'aspiral spring, M. N is also a spring. placed between the lug H and the 'collar 0., By these two' s-prings acting reverselyto each' othei 'agsinst the opposite side of the adjustable lug H, the rod and hammer P are kept at the same relative. distance from the adjustable lag H. -Thus, shouldthe end of the hammer be forced upward, the springN will bring it down again. :On the contrary, should the rod and hammer be forced downward, the'spring M will bring it back. Also, should the lug H be movedupward and dbwnward inthe slot, the rod and hammer will be carried with it in either direction. Q, fig. 2, is a. slotted segmgnt,-the end, Q, of which is connected to the crank-wheel by a link, R, and the opposite end connects with a lever, B, by a link, S. Through the .slot in the segment referred to projects the end S of the lug H, and by which the hammer is operated as follows, viz:

On' turning the crank-wheel to which the end of the segment arm is connected, it will be evident that in so doing, the end Q of the segment will be given a vertical reciprocating movement, whereas the opposite and X connected 'to the lever will remain stationary, it being the centre of the movement of-the segment. 'As the segment movesnpward and downward,it will give to the rod and hammer the same vertical reciprocal movement bymeansof the end or pin of the lug H embraced in the slot, the length of the stroke of the hammer being more or lessas the pin is moved-nearer to or from the centre X, and which is efi'ected by the lever R, This lever, as above said, is connected to the'X end of the segment, hence by depressing the end of the lever will cause the segment to slide forward and thus bring the pin close to the centre of vibration, and thereby lbsscnthe length of the strokes of the hammer, and so on reversing the direction of the lever, will throw the segment backmore-or less, andtherefore will lengthen 'the stroke as tho distancemay be.

. Power-hammers as nsnallyconstructed have no means of regulating the length of the stroke, hence the blows given are always of equal force, whether rapidly or slowly given- It is often desirable that the blows should begivien quickly and at thesame time lightly, as the nature-of the work is'such as to make it necessary to handle itin theleast possible time. With the ordinary power-hammer this cannot be done, as the blows are given with thesame force when given slowly as when made in quick succession. With the hammer above described this'difioulty is obviated, as the length of the'strolre can be easily con-trolled by the lever R which' is conveniently close to thediand of the operator, and thus he can increase or lessen thelcngth of the stroke, as the case may be, without stopping or checking the speed. with which the blows are given. The collars L 0 are so placed on the rod as to admit of their being brought nearer to ormoved away from the lag H, and are retained in position by the pin 1?, thereby increasing or diminishing the tension of the springs M N. By this itis obvi- -oas thaton adjusting the. collars so as to bring theni closer to the lug H, the tension of the springs will he accordingly increased, and will thereby increase the cfi'ective force of the blow given by the hammer P. By

this means the force of the blow on be easily graduated to any desired degree, at the same time-increasing or y the lever B, thus plu'cing opem toiu' y improvement, and deeire'to secure by Letters Patent, is-

1Q The links vR S, lever R, and slotted aegmebt Q, as arranged, in combination with the lug H, for the purposeand in the manner as set forth.

2. The adjustable collars L O, springs M N, in combinatioirwi-th' the rod- K and adjust'ahlejug H, as and for the purpose herein descrjbed.

ALBERT CUNNINGHAM,

ALONZO SHARP. witnesseaz" Tnoms SHARP,

Snmou BTRA'LTON.

the length 61 the stroke and the efieetive

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