US999662A - Steam-hammer. - Google Patents

Description

P. B. LANE & A. c. CREIER.

STEAM HAMMER. APPLICATION FILED Afi. 2, 1909.

Patented Aug. 1,1911.

3 SHEETS-SHEET 1.

5M MLJ 5.13m,

Invaders;

Witnesses;

COLUMBIA PLANOGRAPH DOUWASHINO N n c F. E. LANE & A. O. CRETER. I

STEAM HAMMER.

. APPLICATION FILED AUG. 2, 1909. 999,662.

Patented Aug. 1, 1911.

2 SHEETS-SHEET 2.

9 1 47.2,- Invenl'qra;

Witnesses;

wR W M1 6mm @ebm, MNQW v M COLUMBIA PLANOGRAPH 110., WASHINGTON. D- C- rnvrrn FREDERICK E. LANE, OF KEENE, NEW HAMPSHIRE, AND ALBERT C. CRE'IER, F MASS- ILLON, OHIO, ASSIGNORS TO THE MASSILLON FOUNDRY AND MACHINE COMPANY, OF MASSILLON, OHIO, A CORPORATION OF OHIO.

STEAM-HAMMER.

To all whom it may concern:

Be it known that we, FREDERICK E. LANE and ALBERT C. CRETER, citizens of the United States, residing, respectively, at

Keene, Cheshire county, New Hampshire,

and Massillon, Stark county, Ohio, have invented a new and useful Improvement 1n Steam-Hammers, of which the following is a specification.

The invention relates to a single-frame steam hammer in which the hammer is adapted to operate between guides secured on one side of an overhanging portlon of the frame; and the object of the improvement is to secure and hold the guides to the frame in such a manner that the abutting and adjacent portions of the frame will not be crystallized or fractured by the concussions of the hammer.

lVhen guides for the hammer are secured to the face of the frame merely by means of bolts passed through the guide into the body of the frame, the shocks and strains caused by the blows of the hammer soon bend and shear the bolts and render the guides useless to properly control the hammer, and furthermore the shocks and strains ultimately fracture the frame, usually along the line of the bolt holes. And when the frame is extended as jaws to embrace the outer edges of the guides and securing bolts are passed laterally through the width of the guides and the extended portions of the frame, the shocks and strains of the hammer soon crystallize and fracture the eX- tended portions of the frame, which receive the full force of the concussions and vibrations of the hammer. These difiiculties are overcome by constructing the frame with extensions or jaws adapted to abut the outer sides of the guides, in combination with securing bolts passed through the thickness of the guides into and through the body of the frame; whereby the tensile strength of the bolts saves the frame jaws from the twisting strains and vibrations of the hammer and prevents the jaws from being crystallized or fractured, and the abutment of the jaws against the outer edges of the guides squarely stops the guides from lateral movement and prevents any bending or shearing of the bolts.

A preferred embodiment of the invention Specification of Letters Patent.

Application filed August 2, 1909.

Patented Aug. 1, 1911. Serial No. 510,723.

is illustrated in the accompanying drawings, forming part hereof, in which- Figure 1 is a perspective view of a steam hammer illustrating the general arrangement of the improved parts; Fig. 2, a transverse section on .line 2-2, Figs. 1 and 3, through the overhanging portion of the frame and showing the guides and hammer therein; and Fig. 3, an elevation section on line 83, Fig. 2.

Similar numerals refer to similar parts throughout the drawings.

The frame includes the base plate 1, the standard 2 and the overhanging portion 3, the sides of which overhanging portion are extended forward to form the jaws 4 and 4*. The jaws are shaped to form the substantially rectangular channels 5 in the angle of their inner sides with the forward face of the frame, in which channels the guides 6 for the hammer are secured. The hammer 7 is located between the guides, and is provided with the grooves 8 on each side edge, which grooves neatly engage the tongues 9 which are provided on the inner sides of the guides; on which tongues the hammer is adapted to slide and be guided in its vertical movements. The elongated fiat wedges 10 are preferably provided between the outer sides of the guides and the adjacent faces of the channels, the abutting faces of the wedges and the guides being tapered alike, by means of which the guides can be laterally adjusted to bring the tongues thereof into close and parallel contact with the corresponding grooves of the hammer. The adjusting wedges are preferably made the full width of the outer sides of the guides. so that a full bearing for the same is pro vided against the abutting faces of the channels in the jaws of the frame; and the wedges are retained in place by the inturned lips 11 which are provided on the forward edges of the jaws and which extend around the forward edges of the wedges, and engage the same, as well as the forward edges of the adjacent portions of the guides, thus assisting the securing bolts 12 in holding the guides squarely to their work. The securing bolts 12 extend from the forward faces of the guides directly backward through the thickness of the same and thence into and preferably through the body of the overhanging portion of the frame to an anchorage as the nuts 13 on the rear side of the overhanging frame; and the washers 14; are preferably provided between the faces of the guides and the nuts 15 on the forward ends of the bolts. The belt apertures 16 are laterally widened to permit the lateral adjustment of the guides and to prevent the guides from bearing or shearing laterally on the bolts.

When the parts are assembled, the adjusting wedges are inserted between the hammer guides and the frame jaws and are brought to proper position for neatly engaging the tongues of the guides in the grooves of the hammer, which adjustment is preferably accomplished by the screw shanks 17 and 18 thereon in the usual manner; after which the nuts on the securing bolts are turned to tightly clamp the rear faces of the guides against the contiguous faces of the frame, against which faces the guides are held by the tensile strength of the securing bolts.

In the operation of the hammer, the securing bolts firmly hold the guides against any tendency to be laterally tilted or twist ed by the strains of the hammer, whereby the lateral thrust of the guides is always full width and squarely and directly outward against the abutment of the jaws; and the grip of the bolts furthermore cushions the vibrations of the hammer and to a great extent prevents the same from being communicated directly to the jaws. At the same time, the abutment of the jaws positively stops any lateral movement of the guides and thus prevents any bending or shearing of the bolts. -lVl1ile the jaws squarely re ceive the lateral concussions of the hammer, they are saved from the twisting and vibrating strains thereof, and it has been found that this saving substantially prevents any crystallization or fracture of the aws.

It will be understood that the particular form of Wedge adjustment illustrated and described herein is not essential to the other features of the improvement, and also that such adjustment in itself is not broadly speaking a necessarily separate element in the im roved combination, but that the means therefor can be considered collectively with the respective guides as a single element.

We claim:

1. A power hammer including a frame having forwardly-extending jaws on each side, hammer guides in the angles formed by the face of the frame and the inner sides of the jaws, securing bolts extending rearward through the thickness of the guides and the body of the frame and adapted to clamp the rear sides of the guides against the face of the frame, and adjusting wedges between the outer sides of the guides and the inner sides of the jaws, whereby the jaws form positive abutments for the guides, and in turned lips on the forward edges of the aws engaging the forward edges of the wedges.

2. A power hammer including a frame having forwardly-extending jaws on each side, hammer guides in the angles formed by the face of the frame and the inner sides of the jaws and having laterally widened apertures through the thickness of the guides, securing bolts extending rearward through the guide apertures and the thickness of the body of the frame and adapted to clamp the rear sides of the guides againstthe face of the frame, thus avoiding any tendency to shear the bolts, and adjusting wedges between the outer sides of the guides and the inner sides of the jaws, whereby the jaws form positive abutments for the guides.

FREDERICK E. LANE. ALBERT C. CRETER. WVitnesses:

VVM. R. RrroADs, CHAS M. BALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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