US638704A - Sliding ram for tools. - Google Patents

Description

No. 638,704. PatentedDec. l2, I899. m. n. CONVERSE.

SLlDlNG RAM FOR TOOLS.

(Application flied Feb. 10, 1899.)

(No Model.)

2 I Q/A /g/TOR I UNITED STATES PATEN MASOI-IIL D. CONVERSE, OF NEIV YORK, N. Y., ASSIGNOR TO JOHN J. TOIVER, QF SAME PLACE.

SLIDING RAM FOR TOOLS.

SPECIFICATION forming part of Letters Patent No. 638,704, dated December 12, 1899.

Application filed February 10, 1899. Serial No. 705,201. (No model.)

To all whom it may concern:

Be it known that I, MAsoHIL D. CONVERSE, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain Improvements in Means for Securing Sliding Rams to the Shanks of Tools, of which the following is a specification.

Implements having sliding rams secured to their shanks for applying percussive force have been made. A tool of this character is shown in Letters Patent No. 457,925. In this type the sliding ram is provided with a socket thelower end of which is contracted to form an annular shoulder, and the upper end of the shank is inserted in this socket and then upset to produce an annular flange to abut against the shoulder. In a tool so constructed the annular flange on the end of the shank is liable to become more and more expanded by constant pounding of the ram as the tool is used, and thus by finally engaging the inner walls of the socket will cause thesame to bind and interfere with free movement of the ram, rendering the latter inefficient.

The objects of my present improvements are to obviate such difficulty, to provide simple and inexpensive means of securing the ram ,and incidentally also to reduce the weight of the tool-shank, and I accomplish the same by the means or devices hereinafter fully set forth and claimed.

My invention is comprised, essentially, in a web formed by one or more grooves longitudinally arranged in the tool-shank, the upper end or ends of which are closed or stopped oif, and one or more lugs projecting inwardly in the sliding ram arranged to slidably engage these grooves and opposite sides of the web and to collide with the closed upper ends thereof, and in other particulars, all of which will hereinafter be more fully described in detail.

In the'drawings, Figures 1 and 2 are vertical side elevations, partly sectional, showing one form and means of applying my invention. Fig. 3 is a cross-section on line m a: of Fig. at. Fig. 4 is a vertical edgewise eleva tion with a sectional view on line y y of Fig. 1; and Figs. 5 and 6 are further modifications of construction and application of my invention. All figures show parts, forms of construction,and operation hereinafter more particularly referred to.

Like letters indicate corresponding parts in all figures.

A is the shank, of oval cross-section, having two parallel grooves b b on opposite sides thereof extending lengthwise. These grooves at their upper ends are closed at cc, or, as in Figs. 1 and :2,'n1ay be widened out laterally and stopped off, forming shoulders, and the end of the shank in such case bifurcated by cutting away the web at h between the said grooves.

B is a tubular sliding ram of corresponding oval cross-section provided with two lugs 61 (1,

directly opposite each other near the entranceto the socket, which slidably engage the grooves b b and the web between them, said socket being terminated by a concave recess 6 at the upper end and provided with lateral openings near to said terminus, and said openings being surrounded exteriorly by bosses j j to conserve the strength of the ram at this point.

The application and operation of my invention are as follows: The tool-shank A, having been constructed with grooves stopped off or closed at their upper ends, is embedded in a sand core (in the manner commonly practiced and well known in the molders art) having the required shape to form the interior tubular portion of the ram B, including the lugs d d, which is then cast around the same, said sand core being afterward broken out and removed. The lugs 01 d are in this case integral parts of the ram and, slidably engaging the grooves 19 b in the shank, will oppose and collide with the closed ends a c of said grooves and prevent the ram and tool-shank from being separated. The concavity e of the ram-socket will also prevent the corners of the end of the shank from spreading laterally.

In the construction shown by Figs. 1 and 2 the shank, having been constructed as therein shown, is inserted in the socket of the ram B, the grooves 12 b striding the lugs cl 01 until in the position shown in Fig. 2. Now several blows from the sliding handle or ram B are delivered upon the end of the grooves at the upper end of the shank, whereupon the concavity e of the ram-socket, besides preventing the corners of the end of the shank from spreading laterally, will embrace and bend the stopped-oft ends 0 0 toward each other, or, if preferred, two similar punches or tools f f are inserted through the openings i 'i to contact with either opposite edge of the shank A, near its upper end, and by exterial pressure in the direction of the arrows, Fig. 2, the shoulders c c of the grooves are forced together by bending of the metal, closing the upper end of the grooves, as shown, whereby the shank will not return entirely past the lugs d cl, preventing its separation from the ram.

The further modified construction of my invention shown in Figs. 5 and 6 consists of two similar projecting lips c 0, formed by on tting away the web at h and sloping off the lateral edges of the shank A at its upper end.

The operation of this modification is as follows: The shank A, having been constructed as shown by these two views, Figs. 5 and 6, is inserted in the socket of the ram, as last above described, the lips c 0 coming in contact with the concave sides of the recess 6 at the terminus of the socket, when by one or more sharp blows from the ram the lips c c are bent inward toward each other into the space 71., closing the upper end of the grooves Z), as shown in Fig. 6, whereby the shank and ram are kept from becoming separated.

By making the recess 6 concave the extreme lateral corners or edges of the upper end of the shank are forced inward or compressed slightly on all sides as the toolis used, as before pointed out, so there can be no lateral spreading or upsetting of the top of the shank to bind or cause interference with free movement of the ram.

By reference to the cross-section Fig. 3, in connection with the other figures, it will readily be seen that if butasingle groove 1) and a single lug d were employed the weight of the shank A would be greatly increased. Hence I use two grooves and also flatten the front and rear sides of the shank.

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

1. The improved means of securing sliding.

rams to the shanks of tools, comprising a shank bifurcated at its upper end, having one or more parallel grooves in the sides and lengthwise thereof, widened and stopped 01f at their upper ends on either side of said bifurcation, in combination with one or more lugs near the entrance in the socket of the ram to slidably engage said groove or grooves, and a concave recess at the terminus of said socket, constructed, assembled and to operate substantially as and for the purposes shown and described.

2. The improved means of securing sliding rams to the shanks of tools, comprising a shank bifurcated at its upper end, having one or more parallel grooves in the sides and lengthwise thereof widened and stopped 01f at their upper ends on either side of said bifurcation, in combination with one or more lugs near the entrance in the socket of the ram to slidabl y engage said groove or grooves and lateral apertures '5, 2', in said ram, constructed, assembled and to operate substantially as and for the purposes shown and described.

3. The combination of a longitudinallygrooved tool-shank bifurcated at its upper end, with a sliding socket-handle having a lug or lugs in the inside to slidably engage the groove or grooves of the shank and constructed with a concavity e at itsinterior ter minus wherebythe bifurcated ends of the groove or grooves are bent toward each other by impact of the handle and the corners of the end of the shank are prevented from spreading laterally, substantially as shown and described.

MASCHIL D. CONVERSE. lVitnesses:

R. SANGER, HERBERT E. TREADVVELL.

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